- ID:
- ivo://CDS.VizieR/J/AJ/115/708
- Title:
- Radial Velocities in the Field of M15
- Short Name:
- J/AJ/115/708
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- These tables give the mean radial velocities for 591 stars in the vicinity of the globular cluster M15 (NGC 7078). 230 of these are members of the cluster, the remaining 361 are most likely non-members, although the membership, or otherwise, of the faintest stars with velocities near that of the cluster was impossible to determine. The radial velocities were measured using the Hydra multi-object spectrograph on the WIYN telescope. For cluster members, the median uncertainty is 0.3 km/s.
Number of results to display per page
Search Results
- ID:
- ivo://CDS.VizieR/J/MNRAS/383/445
- Title:
- Radial velocities in the Norma cluster (A3627)
- Short Name:
- J/MNRAS/383/445
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- A detailed dynamical analysis of the nearby rich Norma cluster (ACO 3627) is presented. From radial velocities of 296 cluster members, we find a mean velocity of 4871+/-54km/s and a velocity dispersion of 925km/s. The mean velocity of the E/S0 population (4979+/-85km/s) is offset with respect to that of the S/Irr population (4812+/-70km/s) by {Delta}v=164km/s in the cluster rest frame. This offset increases towards the core of the cluster. The E/S0 population is free of any detectable substructure and appears relaxed. Its shape is clearly elongated with a position angle that is aligned along the dominant large-scale structures in this region, the so-called Norma wall. The central cD galaxy has a very large peculiar velocity of 561km/s which is most probably related to an ongoing merger at the core of the cluster.
- ID:
- ivo://CDS.VizieR/J/A+A/525/A148
- Title:
- Radial velocities in two globular clusters
- Short Name:
- J/A+A/525/A148
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Globular clusters are useful for testing the validity of Newtonian dynamics in the low acceleration regime typical of galaxies, without the complications of non-baryonic dark matter. In the absence of disturbing effects, such as tidal heating, the velocity dispersion of globular clusters is expected to vanish at large radii. If this is not observed, and in particular if, as observed in elliptical galaxies, the dispersion is found to be constant at large radii below a certain threshold acceleration, this might indicate a breakdown of Newtonian dynamics. To minimize the effects of tidal heating that can increase the velocity dispersion at large radii, we study the velocity dispersion profile of two distant globular clusters, NGC 1851 and NGC 1904. The velocity dispersion profile is derived from accurate radial velocity measurements, obtained at the ESO 8m VLT telescope with the FLAMES multi-object spectrograph. Reliable data for 184 and 146 bona fide cluster star members were obtained for NGC 1851 and NGC 1904, respectively.
- ID:
- ivo://CDS.VizieR/J/AJ/139/216
- Title:
- Radial velocities in UGC 842 and NGC 6034
- Short Name:
- J/AJ/139/216
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a new insight on NGC 6034 and UGC 842, two groups of galaxies previously reported in the literature as being fossil groups. The study is based on optical photometry and spectroscopy obtained with the CTIO Blanco telescope and Sloan Digital Sky Survey archival data.
1325. Radial velocities. IX.
- ID:
- ivo://CDS.VizieR/J/A+AS/137/451
- Title:
- Radial velocities. IX.
- Short Name:
- J/A+AS/137/451
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Radial velocities have been determined for a sample of 2930 B2-F5 stars, 95% observed by the Hipparcos satellite in the north hemisphere and 80% without reliable radial velocity up to now. Observations were obtained at the Observatoire de Haute Provence with a dispersion of 80{AA}/mm with the aim of studying stellar and galactic dynamics. Radial velocities have been measured by correlation with templates of the same spectral class. The mean obtained precision is 3.0km/s with three observations. A new MK spectral classification is estimated for all stars.
- ID:
- ivo://CDS.VizieR/J/AJ/155/112
- Title:
- Radial velocities & light curves for HATS-43-HATS-46
- Short Name:
- J/AJ/155/112
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We report the discovery of four short-period extrasolar planets transiting moderately bright stars from photometric measurements of the HATSouth network coupled to additional spectroscopic and photometric follow-up observations. While the planet masses range from 0.26 to 0.90 M_J_, the radii are all approximately a Jupiter radii, resulting in a wide range of bulk densities. The orbital period of the planets ranges from 2.7 days to 4.7 days, with HATS-43b having an orbit that appears to be marginally non-circular (e=0.173+/-0.089). HATS-44 is notable for having a high metallicity ([Fe/H]=0.320+/-0.071). The host stars spectral types range from late F to early K, and all of them are moderately bright (13.3<V<14.4), allowing the execution of future detailed follow-up observations. HATS-43b and HATS-46b, with expected transmission signals of 2350 ppm and 1500 ppm, respectively, are particularly well suited targets for atmospheric characterization via transmission spectroscopy.
- ID:
- ivo://CDS.VizieR/J/AJ/158/197
- Title:
- Radial velocities & light curves of KELT-24
- Short Name:
- J/AJ/158/197
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the discovery of KELT-24 b, a massive hot Jupiter orbiting a bright (V=8.3 mag, K=7.2 mag) young F-star with a period of 5.6 days. The host star, KELT-24 (HD 93148), has a T_eff_=6509_-49_^+50^ K, a mass of M_*_=1.460_-0.059_^+0.055^ M_{sun}_, a radius of R_*_=1.506+/-0.022 R_{sun}_, and an age of 0.78_-0.42_^+0.61^ Gyr. Its planetary companion (KELT-24 b) has a radius of R_P_=1.272+/-0.021 R_J_ and a mass of M_P_=5.18_-0.22_^+0.21^ M_J_, and from Doppler tomographic observations, we find that the planet's orbit is well-aligned to its host star's projected spin axis ({lambda}=2.6_-3.6_^+5.1^). The young age estimated for KELT-24 suggests that it only recently started to evolve from the zero-age main sequence. KELT-24 is the brightest star known to host a transiting giant planet with a period between 5 and 10 days. Although the circularization timescale is much longer than the age of the system, we do not detect a large eccentricity or significant misalignment that is expected from dynamical migration. The brightness of its host star and its moderate surface gravity make KELT-24b an intriguing target for detailed atmospheric characterization through spectroscopic emission measurements since it would bridge the current literature results that have primarily focused on lower mass hot Jupiters and a few brown dwarfs.
- ID:
- ivo://CDS.VizieR/III/192
- Title:
- Radial Velocities measured at PPO by FEHRENBACH
- Short Name:
- III/192
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The radial velocities measured on plates taken with Small Objective Prism instrument at Observatoire de Haute-Provence (OHP), and published in the years 1955-1968, have been improved; the radial velocities derived from a single plate measurement have been eliminated. These corrections imply modifications in Evans's catalogue <III/47>; the modifications have been reported in the "WEB" catalogue <III/190> (see Duflot et al., =1995A&AS..114..269D)
- ID:
- ivo://CDS.VizieR/J/A+AS/124/255
- Title:
- Radial velocities measurements
- Short Name:
- J/A+AS/124/255
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We publish 1879 radial velocities of stars distributed in 105 fields of 4x4degres. We continue the PPO series (Fehrenbach et al. 1987A&AS...71..263F, 1987A&AS...71..275F, 1990A&AS...83...91F and 1992A&AS...95..541F; Duflot et al. 1990A&AS...83..251D, 1992A&AS...94..479D, 1992A&AS...95..541F and 1995A&AS..110..177D), using the Fehrenbach objective prism method.
- ID:
- ivo://CDS.VizieR/J/A+A/487/1095
- Title:
- Radial velocities of AD Boo, VZ Hya, WZ Oph
- Short Name:
- J/A+A/487/1095
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Accurate mass, radius, and abundance determinations from binaries provide important information on stellar evolution, fundamental to central fields in modern astrophysics and cosmology. We aim to determine absolute dimensions and abundances for the three F-type main-sequence detached eclipsing binaries AD Boo, VZ Hya, and WZ Oph and to perform a detailed comparison with results from recent stellar evolutionary models. Methods. uvby light curves and uvby{beta} standard photometry were obtained with the Stromgren Automatic Telescope at ESO, La Silla, radial velocity observations at CfA facilities, and supplementary high-resolution spectra with ESO's FEROS spectrograph. State-of-the-art methods were applied for the analyses: the EBOP and Wilson-Devinney binary models, two-dimensional cross-correlation and disentangling, and the VWA abundance analysis tool.
